Quick-adjustable monkey-wrench



r. E. B-Amz. QUICK ADJUSTABLE MONKEY- WRENCH.

APPLICATION FILED OCT. 2, 1920- Patented Oct. 4, 1921 L, sired degreeand in which the movable jaw- P ny ngs erein usual character.

i BRAN '1; n smi zg or rm nmen; nnsnvim I onIcx wmsrABLE MoNknY wnnNcm,

1392391i i j App1ication-filed October 2,

T0 allwhomitmayrconcern: 7.

Be it known thatrI, ,FRANK BAR'rz, a citizen of y the United f States, residing. at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful {Improvements in Quick- Adjustable Monkey-Wrencl1es,of which the 7 following is a specification. V This invention relates towrenches,-and particularly to monkey ;;wrenches, -'and the"- generalobject of this invention is to; provide very simple means fwherebythe ;j aw, of the wrench maybe held in itsg'adjustedposition, or may be readily unlatched so thatit maybe shifted to readjust it. w A further object of theinvention is to provide a device-of this character-in which the movable jaw is quickly. shiftable to any deis held tightly. against thruStQand-in which thelocking device may, be readilyshiftedto 7 its inoperative position to. permit the "ad-l .justment: of e the movable jaw, andfis resil iently urged to itslocking position to hold themovable-jaw.-i I c Other ob 'ects 1 will appear in thecourse of the following description. I 1 I My invention is illustrated in the ac- Figure -'1 is an elevation'of a-wrench constructed in accordancewith my invention-,. the handle being partly broken away I Fig. 2 is a fragmentary, elevation of aportion of the wrench ,ishowing-the handle in sectionito show theelocking devicein its locking, position; 4 1

Fig. 3 is a like view to Fig. 2-but showing the locking device in its inoperative position; 7 i

Fig. 4 is a perspective view of the locking plate. a

Referring to these drawings, 10designates the shank of the wrench having thereon the handle 11 and provided with the fixed jaw 12. These parts may be of any suitable or Mounted upon the shank 10 is the slide 13 embodying the movable jaw 14. This slide is formed to slidingly embrace the shank 10 and shift longitudinally thereon. Attached to the sliding jaw and extending therefrom parallel to the shank 10 is the rod 15, which is shown as circular in cross section, and which may s 'jecificatijonofletters Patent,

1920. Serialflo. 4i4jaio.

, Patented Oct. 4; 17921 the shank 10 Under" ordinary-.ci-rcuni- M through but will have .a bore nearly the length of the shank 15' which will permit the jaw'l l. to be shifted" from a position against the jaw 12 to its maximum distance projecting from the rear endof the handle: Y

therefrom without the rod .15

Mounted upon the shank-10 and abutting 1 againstthe' inner end thehandle and" practically forming part thereof is a hollow casing-"x17 through which the rod :15 I passes-and which contains za-coiled' spring 18 through whichj the-rod l-5 ;passes.-- ,Thisr: coiled spring at onej end bearsagainst-the endwall-19'of the casing. Disposed within the casing orhousing isf a locking plate-20' whose inner end-ismountedfor oscillation; or rocking movement. I, -;haveillustrated this inner end-ras being mounted%within a notch 21 .;formed-in' the-edge face" of the shank where the? sh'ankjpassesthrough 1 the casingor housing 19,-;but I do notwish' to beg'limited 'tothis yparti cular :rneansv for mounting the inner end ofthis locking plate 20. I} have v also illustrated g this 1 locking plate as-being angular inform, that is-ex-v tend ng; outward from thenotch 20, parallel to the adjacent face of the-handle then exftendingparallelato thejlnshank, and then-lex tending; ,again I outward l to :the outer face of housing l'i. Atits outerjfend 1 this look.- ing' plate is reduced in width, as at-22, and

extends .out through: a slot 23. in the end face "=2 of the fhou s'ing-t- The-extremity of this plate" is provided -with a ;fin'gerjpiece: in the Qform'; v

of a button 24. The spring 18 bears against this lockin plate and urges it toward the butt end of the handle. When the locking plate is free and is shifted by the spring into the position shown in Fig. 2, thewalls of the perforation 25 in the locking plate bind on the rod 15, and the greater the pressure onthis rod 15 and on the jaw 14 tending to move the jaw toward the handle, the greater will be the binding action of the locking plate on the rod 15. Thus it will be impossible to shift the jaw '14 toward the handle with the locking plate in the position shown in Fig. 3. When it is desired to shift the locking jaw, however, the button 24: is forced toward the jaws, which turns the lockingjplate into a position at right angles to the axis of the rod 15, and under these circumstanc s the rod 15 can shi t 51110 3 and easily through the looking plate, thus eluding a shank having'a handle portion and 1 a fixed jaw at its end remote from the handle portion, a movable jaw slidably mounted on} the Shank formovement toward or frOm-the v jaw, a rod attached to the movable jaw and permitting the movable jaw- 14 to be ad justed longitudinally upon the-shank. soon as the bIIttOD Q L is released, the spring 18 will urgethe lockingv plate againinto angular relation to the rod: and latch on lock the rod.

' Inasmuch asthe. principle of this device might be embodied in manyforms, I do not wish to be limited to the exact details of construction except as defined in the appended claims. The use of the device will be obvious from what has gone before. f

1. Aiwrench of the-character described infixed jaw between the handle andthe "fixed 'extending parallelfto the shank, the handle being provided with a longitudinally extend ing'bore through which said rod travelsrat all:tim'es, a locking device for the rod dis posed at that end ofthehandle adjacent th'ei movable'jaw embodying a locking plate having an aperture approximately the diameter of the rod and through which the rod passes, saidplate bein 'fulcru'med at its inner end on the shank or swinging movement parallel toth'e shank'and rod, the' Eouter endof e the: shank forming a finger piece','*and a f springurging "e"plate' out of a'position 35 1 at right angles to 'the rod. I 2. A ,wrench of he-Qharacterdescribed' ineluding a shank having a fixed-jaw ;at its outer end and a handle at its inner endjthe' handle being provided with a longitudinally extending bore parallel to the shank, a slid: able jaw mounted upon-the shank and hav ing'a rod extending-parallel 'to the shank and shiftable withthemovable jaw, said rod extending into the bore 'andbeing movable therein, a housin' 1 mounted uponthe'gshank" V at thejunction o the shank and handle and through which the rod passes, said housing beingopen on its end facing thehandle and having its; open end abutted against the adjacent end ofthe handle, a locking plate disposed .within 7 the housing and I entirely e inclosed therein and having its inner end I mountedfor rocking movement parallel to the shank, the outer end of the plate having a portion 1 extending out through a slot in of right angular relation to-the rod; that "7 end of the slot inthe housing adjacent the jaws forminga stop limiting the movement which said rod travels'at' all timesj'a hous -ing"havin'g an: opening through which the ishankfpasses and having af'slot atits other" fendfth'at 'it'ace of the housing ,1 confronting f'the handle being open and being abutted ag'ai'n'st'the adjacent end of the, handle, the

shank having a shouldenengaging over the outer face o-f'the housing and holdingji't'in place; and 'alooking device mounted within vthe housing and adaptedtoq havelocking e 'gagement-with said rod, the extremity ;of-

tending 'out through the slot{ in the housing whereby it may be'manipulated' In testimonywhereof I afiix my si nature;

FRANK E. B

the locking device having'a finger pieceex the housing and provided at its extremity with a finger piecejthe looking plate having an aperture approximately the} diameter: of the rodandthrough which the? rod passes, and a spring disposedinthe'housing'and 'bearingfag ainst the locking plate and urging it toward the butt end of the handle'and out I 1of'-the; plateto-a position at right"angles to I 

